Gap Fill - Paragraph One


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Paragraph 1

In today's world, many are getting shorter and shorter. Scientists have just measured incredibly short. They recorded the shortest unit of ever measured. It is called a zeptosecond. This is a tiny, tiny, tiny of one second. It is a trillionth of a billionth of a second. This is a decimal followed by 20 zeros and then a 1. The scientists study physics at the Goethe University in Germany. They used special high-tech equipment to measure how long it takes a to cross a hydrogen molecule. The scientists said it took 247 zeptoseconds for to happen. This is too small for the eye to see, and the time it takes is too for humans to sense.

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